In this episode, Dave Eicher describes the upcoming conjunction of two bright objects in the evening sky. On October 5th, you ...

An experiment with powerful pulses of energy sent test targets flying in a step forward for planetary defense.

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An issue called the final parsec problem detailed the theoretical difficulty in bringing supermassive black holes close ...

In this episode, Dave Eicher invites you to observe the annular eclipse that will occur October 2. Annular eclipses occur when the Sun, the Moon, and Earth line up, in that order. But in this case, ...

On September 22, our satellite passes in front of the famous star cluster M45 in a rare, breathtaking event, producing ...

Neptune reaches opposition today at 8 P.M. EDT in the constellation Pisces. Opposition is generally the best time to view ...

When we think of color in the night sky, we often think of beautiful images of galaxies and nebulae. Unfortunately, most of ...

Our Earth is about 4.5 billion years old and, through careful work, scientists have pieced together a timeline of its past. But much of its earliest history remains a mystery. Scant geological ...